(Choose 1 answer)
(See picture)
A. 0.0686
B. 0.0314
C. None of the other choices is correct
D. 0.6860
E. 0.3140
Exit 15
To determine the difference, if any, between two brands of radial tires, 12 tires of each brand are tested. Assume that the lifetimes of both brands of tires come from the same normal distribution N(μ, 33002). Compute P(X-Y < -2500).
Let P(Z <-1.86) = 0.0314, P(Z <-1.49)=0.0686 and P(Z<0.48) = 0.686.
